$\backslash$table$[[$To$,,,,,,,$Plant$],[$FROM$,,,,,,,$Capacity$],[1,,10,,4,,11,],[1,40,,30,,,,70],[7,,12,,5,,8,],[,,,20,,30,,50],[3,,9,,7,,6,],[,,,,,30,,30],[\backslash$table$[[$Project$],[$Requirements$]],40,,50,,60,,150]]$

What is the total cost?

a$.1060$

b$.1080$

c$.1020$

d$.1040$